Fubhace



W. D. LATHAM.

FURNACE.

APPLICATION FILED JUNE I0. ISIB.

1,303,924. Patented May 20, 1919.

INVENTOR fir/1m QM/i002 WITNESSES ATTOR NEY WILLIAM D. LA'lI-IAM, 0F ATLANTA,GEORGIA.

FURNACE.

To all whom it may concern:

Be it known that I, WILLIAM D. LATHAM, a citizen of the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Im rovements in Furnaces, of which the followmg is a specification.

This invention relates to furnaces, and particularly to furnaces of that character wherein b ames or deflecting plates are employed for causing the gases to take a tortuous course through the furnace to insure complete combustion of the gases, and has for its primary object to provide a furnace of this character which is of simple construction and which is constructed in such manner that the greatest possible amount of benefit will be derived from the fuel expended.

A further object of the invention is to provide a furnace of the character mentioned employing a novel arrangement of blaze dividing means and baffles or deflectors, the said dividing means and deflectors being so arranged within the furnace and smoke passage thereof as to cause the unburnt gases to be directed to a position within the furnace to insure complete combustion and to secure the greatest possible amount of benefit from the said gases.

With these objects in view, together with others which will appear as the description. proceeds, the invention resides in the novel formation, combination and arrangement of parts, all as will be described more fully hereinafter, illustrated in the drawings and particularly pointed out in the claim.

In the drawings Figure 1 is a horizontal sectional view taken through a conventional form of furnace and illustrating the construction and arrangement of blaze dividers and baflles constructed in accordance with the invention,

Fig. 2 is a longitudinal sectional view taken through the furnace, and

Fig. 3 is a transverse vertical sectional view taken substantially on line 3-3 of Fig. 2, the view being on a reduced scale.

Referring now more particularly to the drawings, 3 indicates generally the body portion of the furnace, the said body having at one end thereof, the fire box 4 within which the grate 5 is arranged, and the combustion chamber 6 communicates with the fire box at one end and with the flue opening Specification of Letters Patent.

Patented May 20, 1919.

Application filed June 10, 1918. Serial No. 239,199.

7 at its opposite end. A bridge wall 8 sepalgates the ash pit from the combustion cham- Rising from the bridge wall 8 intermediate the ends thereof, is a blaze divider 9 extending up to the bottom of the boiler 12. This divider is triangular in cross section, having its apex disposed toward the fire box, so that flame and smoke passingrearwardly from the latter will be deflected toward the side walls of the furnace. This deflection of the products of combustion causes the latter to move with a swirling motion toward the sides of the furnace, and to cause this divided product to be again agitated and directed toward the center of the draft passage in the combustion chamber, the latter is provided with angularly disposed vanes, batfles or deflectors indicated at 10. These deflecting walls are disposed vertically within the combustion chamber, reaching up to the base of the boiler 12, and extend angularly from the side walls of the chamber. These walls are inclined toward the rear end of the combustion chamber at any desired angle, their front faces c0nverging and thelr inner ends being cut off oblique so that they in turn diverge slightly toward the rear. The opening between these ends is directly in rear of the base of the divider 9, and by preference has an area substantially that of the flue 7 The walls 10 rise from the bottom of the combustion chamber to the bottom of the boiler shell 12, their upper edges being curved at 11 to fit said shell as indicated. By preference I dispose these walls some distance in rear of the bridge wall and therefore in rear of the divider, and each wall 10 stands in rear of the space at each side of the divider so all gases and smoke flowing though said space and deflected outward by the divider strike the front face of the wall and are deflected again inward; and yet the opening between the two walls 10 is of an area substantially that of the flue 7 so that there is no retarding of the products of combustion or gases further than they would suffer in passing through such flue.

It is generally known that the furnaces now in use do not consume all of the gases and smoke caused by the fire, in that the heat is more intense at the sides of the furnace and that the smoke and fumes arising from the center of the fire bed pass rearwardly therefrom and through the smoke flue Without being ignited. The divider causes the unburnt gases to pass to the sides of the fire box Where the heat is intense. There they are ignited, and the flame and products pass rearwardly between the ends of the deflectors or baflies 10. This thorough agitation or mixing of the products of combustion insures complete ignition Whereby the smoke is consumed and the greatest possible benefit is derived from the fuel used. It will be understood, of course, that the flames and ignited gases pass into the flue opening 7 and through the tubes of the boiler with Which the furnace is used.

Having thus fully described my invention, What I claim as new and desire to secure by Letters Patent is In a boiler furnace having the usual transverse briclge wall beneath its boiler and a smoke fine in rear of said boiler, a divider rising from the midlength of the bridge Wall to the boiler shell and of triangular cross section With its apex 'forward and its base rearward, and a pair of deflecting Walls in rear of the bridge Wall rising from the bottom of the combustion chamber to the shell of the boiler and converging from the sides of the combustion chamber to the rear and their inner ends beveled at such angle that they in turn diverge to the rear slightly, the opening" between such ends being directly in rear of the base of said divider and of an area substantially that of said fiue. In testimony whereof I iaflix my signature in presence of two witnesses.

WILLIAM D. LATHAM. WVitne'sses':

G. Bonus BLooK, JNO. D. BLACKBURN.

Copies of this patent may be obtained for five cents each, lay-addressing the Commissioner of Patents. Washington, 13.0. 

